<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model.trim="uname" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model.number="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="gender">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="addValue">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>

        <tr v-for="(item, index) in list" :key="item.id">
          <td>{{ index + 1 }}</td>
          <td>{{ item.uname }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.gender }}</td>
          <td>
            <button @click="del(item.id)">删除</button>
            <button @click="edit(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      list: [
        {
          id: 1,
          uname: 'Tom',
          age: 19,
          gender: '男',
        },
      ],
      delData: '',
      uname: '',
      age: '',
      gender: '',
      flag: 1,
    }
  },

  methods: {
    addValue() {
      if (this.uname && this.age && this.gender) {
        if (this.flag) {
         
          const newData = {
            id: this.list.length + 1,
            uname: this.uname,
            age: this.age,
            gender: this.gender,
          }
          this.list.push(newData)
          this.uname = ''
          this.age = ''
          this.gender = ''
        } else {
          this.list.splice(this.delData, 1, {
            uname: this.uname,
            age: this.age,
            gender: this.gender,
          })
          this.uname = ''
          this.age = ''
          this.gender = ''
          this.flag = 1
        }
      } else {
        alert('请输入完整的内容')
      }
    },

    del(id) {
      this.list = this.list.filter((item) => item.id != id)
    },

    edit(id) {
      this.delData = id

      this.uname = this.list[id].uname
      this.age = this.list[id].age
      this.gender = this.list[id].gender

      this.flag = 0
    },
  },
}
</script>
